Jaak Laineste wrote: > Sea aquatorium (mereakvatoorium) is actually legally quite poorly defined > in Estonia. Sea law (merepõhjaseadus) is under construction, as there is > issue that now nobody knows who gives permits to build wind turbines into > sea. In reality sea areas are administred in national level, not in local > (county or municipality) level. In this terms current local administrative > borders are geometrically same as coastline, plus the islands/islets nearby > which are belonging to some municipality/county.
But exactly these islands/islets make things look ugly. At least having a county multipolygon containing hundreds of islets does not make sense to me (even though it might be correct). And if I start to divide the sea by counties, IMO there is no reason not to do it for other admin_levels. Those boundaries are not maritime borders, so it's clear that only land masses inside the polygon belong to the entity in question. Those boundaries are available using the coastlines. > Also official border maps what we used from Maaamet reflect this. After > merepõhjaseadus (sea area law) is made, maybe sea will be also divided > between counties, but I guess that sea will remain administred in national > level. I know ... and exactly these official borders need to be interpreted in a map. If we consider the data from Maa-amet, Narva city ends at the riverbank of Narva river, whereas the national border is a few meters farther away in the middle of the river. > Another question is that maybe islets (laiud) should not be tagged as > administrative areas, as (if?) Mapnik would try to put admin names on top of > everyone of them; and map would look bad. Was this the issue with islets > near Hiiumaa? Problem here was in some import of the 2008 data, these islets all had the name attribute "Hiiu maakond". Now you're getting exactly to the point. :) Even though islets only get coastlines which are part of the boundary=administrative relations, Mapnik renders an administrative border (including the relations' names) along the coastline. :/ [I have seen that the renderer seems not to produce very reproducible output in some cases] That's exactly why my approach is to build unoffical polygons around the sea part of the administrative entity including the islets. I have now done so for admin_level=8 in Hiiu, Saare and Pärnu maakond. [I'll revert that if agreed here] Andre -- A production of the digitally insane.
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